Printing-chase.



A. H. WADEWITZ.

PRINTING CHASE.

APPLICATION I'ILED MAY 16, 1912.

(0| mum PLAN Y'IRAPH u). wwwmwnu. u. c.

Patented Dec. 24, 1912.

ALFRED H. WADEWITZ, F BACINE, WISCONSIN.

PRINTING-CHASE.

Specification of Letters Patent.

Patented Dec. 24:, 19112.

Application filed. May 15, 1912. Serial No. 697,539.

To all whom it may concern Be it known that I, ALFRED H. lVAouwrrz, a citizen of the United States, residing at Racine, in the county of Racine and State of Wisconsin, have invented new and useful Improvements in Printing-Chases, of which the following is a specification.

The invention relates to printing chases, and more particularly to the class of false chases for flat bed printing presses.

The primary object of the invention is the provision of a false chase in which wood furniture and quoins ordinarily used in blocking and locking type chases are entirely dispensed with, as the said type chase can be securely mounted and fastened in proper position on the flat bed of the printing press irrespective of the shape and size of the form.

Another object of the invention is the provision of a false chase in which the type chase will be held thereby on three of its sides so that there will be no possibility of displacement of the same during the working of the press, yet the type chase can be readily and quickly adjusted when upon the fiat bed of the said press.

A further object of the invention is the provision of a false chase which is simple in construction, readily and easily mounted and adjusted on the bed of the printing press, and also one which is strong, durable, thoroughly reliable and eflicient in its purpose, and inexpensive in manufacture.

With these and other objects in view the invention consists in the construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawing, and pointed out in the claims hereunto appended. In the drawing: Figure 1 is a fragmentary plan view of a flat bed printing press with the type chase mounted thereon, and the false chase constructed in accordance with the invention in operative position. Fig. 2 is a sectional view on the line 2-2 of Fig. 1. Fig. 3 is a perspective view of the rack bar adapted to cooperate with the holding dogs. Fig. 4 is a perspective view of one of the holding dogs.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawings by numerals, 5 designates generally the fiat bed of a printing press of the ordinary we'll-known type on the upper face of which are fixed as usual side bars 6 which are ordinarily known as brayers, the same being fastened thereto in any suitable manner, while arranged between and secured to the upper face of the said bed nearest the end of the cylinder of the printing press is a cross bar 7. At the opposite end of the bed 5 and rising there from are spaced lugs 8 provided with adjusting screws 9 working against a bar 10 which serves as a contacting strip for one end of a type chase 11 of the usual construction.

The false chase comprises a pair of bars 12 which are arranged against the inner side of the bars (5 so as to lie parallel therewith, the inner edges of the bars 12 being formed with spaced semicircular-shaped notches 13 throughout a greater portion of their length. while each bar at one end is provided with an out-turned ear 14 disposed against one end edge of the side bar 6 adjacent thereto. The cars 14 have threaded therein set screws 15 which enable the bars 19 to be adjusted longitudinally upon the bed of the printing press. Arranged between the bars 12 is a holding bar 16 formed in one edge with a plurality of spaced notches 17 providing fulcrum seats for adjustably receiving clamping dogs 18 the same being formed with curved fingers 19 and 20 respectively, the fingers 19 being designed to engage one end of the type chase, while the fingers 20 are adapted to engage the sides of the type chase for the secure holding of the same on the bed of the printing press. The dogs are formed with nibs 21 which engage in the notches in the bar 16 whereby said dogs will be held in adjusted position for clamping the type chase in a manner as shown in Fig. 1 of the drawing.

When it is desired to tighten the type chase 11 when engaged by the dogs, the ad justing screws 9 in the ears 8 are turned thereby locking the said chase upon the flat bed of the printing press without requiring the use of ordinary wood furniture or quoins.

It is clearly apparent that the dogs may be positioned with respect to each other to accommodate type chases of different size.

From the foregoing description, taken in connection with the accompanying drawing, it is thought that the construction and operation of the invention will be clearly understood, and therefore a more extended explanation has been omitted.

What is claimed is 1. The combination with the fiat bed of a printing press having spaced parallel side bars fixed to and rising from said bed, and a cross bar also fixed to and rising from said bed, of notched bars arranged against the inner edges of said side bars and supported upon the bed, a holding bar adjustably engaged in the notched bars, and clamping dogs adapted to engage both the end and sides of a type chase and adjustably engaging the holding bar.

2. The combination With the fiat bed of a printing press having spaced parallel side bars fixed to and rising from said bed, and a cross bar also fixed to and rising from said bed, of notched bars arranged against the inner edges of said side bars and supported upon the bed, a. holding bar adjustably engaged in the notched bars, clamping dogs adapted to engage both the end and sides of a type chase'and adjustably engaging the holding bar, and means opposite the holding bar and engageable With the other end of such type chase to secure the same upon the fiat bed.

In testimony whereof I aflix my signature in presence of two Witnesses.

ALFRED H. lVADElVITZ.

Witnesses:

E. H. VVADEWITZ, E. J. CHRISTENSEN.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

